Evaluation of the Relations between Yield and Yield Components of Tomato (Solanum lycopersicum L.) Hybrids by Correlation and Path Analysis

Abstract

Tomato is one of the most produced vegetables in the world and there are many plant breeding studies that are carried out on this vegetables species. One of the most important aims of tomato breeding is the improvement of fruit quality and yield in both open-field and greenhouse growing conditions. The knowledge of factors with regard to yield is making plant breeders work easier. In the present study, the correlations of some plant characteristics thought to be related to yield and their direct and indirect effects on yield were analyzed. This study was conducted with 14 genotypes in 2020 and a randomized complete block design was employed as an experimental design. The relationship between 12 traits and yield was determined through path coefficient analysis. It was determined that the number of days from the first fluorescence to the first fruit set time, the length under the first cluster, fruit length, fruit diameter and Brix° value have a directly negative effects on the yield. However, fruit weight, fruit number, leaf diameter, and early yield have a directly positive effect on the yield. However, early yield had a directly positive effect on the yield. According to the result of this study, in the correlation matrix, the number of days from first fruit set time to fruit ripening, internode length, fruit diameter, leaf diameter, leaf length and number of fruit per plant are insignificant. The obtained results a potentially be utilized as selection criteria in the future studies on yield.

Keywords

• Correlation
• Genotype
• Path coefficient analysis
• Tomato
• Yield

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